力拓的股价自一月来已翻番，而自去年的低点以来已几乎翻三倍。
Rio's have doubled in price since January and almost trebled from their low point late last year.
虽然该公司的股价比去年三月要高一倍，但比起他们最高时的股价却仍只有一半。
Although its share price is twice what it was last March, it is still at barely half its peak.
自今年2月以来，RIM的股价已经下跌超过50%，而过去18个月，其在美国智能手机市场的份额也从34%下滑至24%。
RIM's stock has fallen more than 50% since February, and its share of the U.S. smartphone market has dropped to 24% from 34% in the past 18 months.
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